linux-kernel - Re: [PATCH v3 03/16] mfd: mfd-core: match device tree node against reg property

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Message-ID: <20200527065344.GP3628@dell>
Date:   Wed, 27 May 2020 07:53:44 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Michael Walle <michael@...le.cc>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Shawn Guo <shawnguo@...nel.org>, Li Yang <leoyang.li@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <maz@...nel.org>, Mark Brown <broonie@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org,
        linux-pwm@...r.kernel.org, linux-watchdog@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 03/16] mfd: mfd-core: match device tree node against
 reg property

On Tue, 26 May 2020, Andy Shevchenko wrote:

> On Tue, May 26, 2020 at 05:54:38PM +0200, Michael Walle wrote:
> > Am 2020-05-26 09:24, schrieb Lee Jones:
> 
> ...
> 
> > Like I said, in the long term I would like to have support for
> > different versions of the board management controller
> 
> > without having to change the device tree and have device tree bindings for the
> > subdevices at the same time.
> 
> But isn't device tree to describe *very specific platform* rather than *class
> of platforms*?

Yes.  Device Tree describes the hardware.

If the hardware changes, so must the Device Tree.

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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